Jim Wielaard Post Doctoral Fellow LIINC, Columbia UniversityMailing address & numbers: LABORATORY FOR INTELLIGENT IMAGING AND NEURAL COMPUTING DEPARTMENT OF BIOMEDICAL ENGINEERING, Mail Code 8904 COLUMBIA UNIVERSITY 1210 AMSTERDAM AVENUE NEW YORK, NY 10027 TELEPHONE: 212.854.7749 FAX : 212.854.8725 EMAIL : djw21@columbia.edu